adding the option to start collecting the tb
statistics later using the start_stats command.
Signed-off-by: vandersonmr <vanderson...@gmail.com>
---
hmp-commands.hx | 15 +++++++++++++++
monitor/misc.c | 15 +++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/hmp-commands.hx b/hmp-commands.hx
index bfa5681dd2..616b9f7388 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1885,6 +1885,21 @@ STEXI
@findex qemu-io
Executes a qemu-io command on the given block device.
+ETEXI
+
+ {
+ .name = "start_stats",
+ .args_type = "",
+ .params = "",
+ .help = "(re)start recording tb statistics",
+ .cmd = hmp_tbstats_start,
+ },
+
+STEXI
+@item start_stats
+@findex
+(Re)start recording tb statistics
+
ETEXI
{
diff --git a/monitor/misc.c b/monitor/misc.c
index 1fb4d75871..d39a048fd7 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -469,6 +469,21 @@ static void hmp_info_jit(Monitor *mon, const QDict *qdict)
dump_drift_info();
}
+static void hmp_tbstats_start(Monitor *mon, const QDict *qdict)
+{
+ if (!tcg_enabled()) {
+ error_report("TB information is only available with accel=tcg");
+ return;
+ }
+ if (qemu_loglevel_mask(CPU_LOG_HOT_TBS)) {
+ error_report("TB information already being recorded");
+ return;
+ }
+ qht_init(&tb_ctx.tb_stats, tb_stats_cmp, CODE_GEN_HTABLE_SIZE,
+ QHT_MODE_AUTO_RESIZE);
+ qemu_set_log(qemu_loglevel | CPU_LOG_HOT_TBS);
+}
+
static void hmp_info_tbs(Monitor *mon, const QDict *qdict)
{
int n;
--
2.22.0
